The Land Rover and Jaguar fault code B13C2-49 indicates an internal electronic failure of the windshield mist/humidity sensor. This sensor is responsible for detecting moisture on the windshield to prevent fogging by automatically adjusting the climate control system. Common Symptoms
Windshield Fogging: The glass may fog up and not clear automatically as it should.
Climate Control Delays: The climate control panel may experience a "sleep" period where it doesn't respond for about a minute after starting the vehicle.
Live Data Issues: Diagnostic tools may show a constant 0% humidity reading, suggesting the sensor has completely failed. Location and Identification
The sensor is located behind the rearview mirror, tucked under a black plastic cover. Part Numbers: LR058011, LR025888, or BJ32-18D693-BA.
Compatibility: Jaguar sensors with the same specifications are often identical but sometimes cheaper than the Land Rover-branded version. Potential Fixes
Sensor Replacement: This is the most frequent solution. You can find detailed walkthroughs for replacing the sensor on community forums like Drive2.
Inspect Mounting: Sometimes the sensor isn't actually broken but has fallen off its mount. Ensure the sensor is firmly pressed against the glass.
Check the Battery: Weak vehicle batteries can trigger various phantom electronic codes. If your battery is old, consider testing or replacing it as recommended by specialists at MW4-Outfitters.
Are you experiencing any other warning lights on your dashboard, or is the fogging your only issue? land rover jaguar b13c2-49
Меняем датчик запотевания стекла- ошибка B13C2 - Drive2
If you have a code reader capable of reading JLR-specific codes (such as the iCarsoft CR Max, Autel Ultra, or JLR SDD), follow this professional workflow.
49 suffix translates to "Internal Electronic Failure."In plain English: Code B13C2-49 means the car’s main computer has tried to communicate with the central touchscreen or infotainment brain, but the screen’s own internal processor has reported an error. It is essentially a "blue screen of death" equivalent for your vehicle’s center console.
This is the most reliable fix. You do NOT need to replace the entire screen module ($2,500+). Replacement fans are available from electronics suppliers (e.g., Sunon, Delta) or JLR-specific kit part number LR136587 (fan only) or LR162934 (fan with mounting bracket).
Procedure (abbreviated):
Note: This is a draft interpretation based on standard JLR DTC structures. For precise repairs, verify with a dedicated JLR diagnostic tool.
The B13C2-49 fault code in Jaguar and Land Rover vehicles indicates an internal electronic failure of the windshield misting sensor (also known as the humidity sensor). This sensor, typically located behind the plastic cowl of the rearview mirror, is responsible for monitoring cabin humidity and windshield temperature to prevent the glass from fogging up. Understanding DTC B13C2-49
This specific Diagnostic Trouble Code (DTC) is common across various models, including the Range Rover Evoque, Discovery Sport, and Jaguar F-Type. Unlike other sub-codes for this sensor (like B13C2-87, which may suggest wiring issues), the -49 suffix points specifically to a hardware failure within the sensor's circuitry. Primary Symptoms While the car remains drivable, owners often report:
Automatic Defogging Failure: The HVAC system fails to automatically direct air to the windshield when it fogs up. The Land Rover and Jaguar fault code B13C2-49
HVAC Inefficiency: In some cases, the A/C compressor may struggle to maintain set humidity levels, or the climate control system may exhibit erratic behavior.
Persistent Error Code: The code often reappears immediately after clearing if the hardware is faulty. Common Causes
Замена датчика влажности - Range Rover Evoque - Drive2
In Land Rover and Jaguar vehicles, diagnostic trouble code B13C2-49 refers to a fault with the Windshield (Windscreen) Misting/Humidity Sensor, specifically indicating an internal electronic failure. This sensor is typically located behind the rearview mirror and is responsible for detecting moisture levels to manage automatic climate control settings like defogging. DTC Breakdown: B13C2-49 B13C2: Identifies the Windscreen Mist Sensor circuit.
-49: This failure subtype indicates an Internal Electronic Failure. This usually means the sensor is receiving power but its internal components are not communicating correctly or have shorted out. Common Symptoms
HVAC Performance Issues: The air conditioning system may not automatically clear window fog, or the compressor may behave erratically.
Check Engine/Service Lights: While it rarely triggers a dashboard "Check Engine" light, it will appear as a stored code during a professional diagnostic scan.
Eco Mode Failure: In some models, faults in the misting sensor can prevent the "Stop/Start" system from operating, as the car prioritizes keeping the cabin humidity levels stable. Potential Causes
Sensor Component Failure: The internal circuitry of the humidity sensor has failed. This is the most common cause for the "-49" sub-code. Step-by-Step Diagnostic Guide If you have a code
Windshield Issues: If the windshield was recently replaced with a non-OEM (non-genuine) version, the sensor may fail to calibrate or read correctly due to differences in glass thickness.
Wiring and Connection: A loose, corroded, or damaged LIN bus circuit connection between the sensor and the Automatic Temperature Control (ATC) module.
Gel Pad Issues: A degraded or air-bubbled gel pad between the sensor and the glass can cause read errors, though this usually triggers different sub-codes. Recommended Diagnostics & Repair
Visual Inspection: Check for any signs of moisture intrusion near the rearview mirror housing or damage to the sensor connector. Hard Reset
: Some technicians suggest a vehicle hard reset (disconnecting the battery briefly) to clear stubborn communication glitches, though this is often a temporary fix.
Sensor Replacement: If the wiring is intact and the glass is clean, the standard fix is replacing the humidity sensor. Genuine parts, such as the LR058011 Humidity Sensor Go to product viewer dialog for this item.
, are often recommended to ensure compatibility with the vehicle's LIN bus system.
Have you recently had your windshield replaced, or are you noticing any fogging issues in the cabin? Jaguar Land Rover DTC B13C2-49 Guide | PDF - Scribd
If this code is present, you may experience the following:
If the eMMC is not physically dead, a dealer technician can use "Pathfinder" to perform a "Module Repair" function. This writes a fresh bootloader to the memory. This is the recommended first professional step. Ensure your battery is on a maintainer during the update (a voltage drop during flashing will kill the module permanently).